Originals
Primary stability of bipolar hemiarthoplasty with cementless taper wedged stem
2020 Volume 32 Issue 4 Pages 521-525
Details
2020 Volume 32 Issue 4 Pages 521-525
We use taper wedged stem when we treat femoral neck fracture, so we reserch primary stablity of this stem.
We can follow 32 patients over a year. Patients averaged age is 81.7 years old. All of our patients had bipolar hemiarthoplasty with cementless taper wedged stem with posterior lateral approach. We use Dorr classification, our parients are devided type A 9 hips, type B 17 hips, type C 6 hips. We divided four types of stem fit: mediolateral-fit 20 hips, flare-fit 7 hips, multiple point-fit 5 hips.
Average stem sinking is 0.42mm. Bone reactions are observed, reactive line 10 hips, spot welds 20 hips, stress shieldings 8 hips.
We conclude primary stability of our patients are well, but we need longer follow up.
